yelp crashed with SIGSEGV in WebCore::Document::view()

[Alan Jenkins]

This is a duplicate of #802520, with better crash information

ProblemType: Crash
DistroRelease: Ubuntu 11.04
Package: yelp 3.0.0-0ubuntu2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
Architecture: amd64
CrashCounter: 1
Date: Thu Jun 30 09:02:26 2011
ExecutablePath: /usr/bin/yelp
ProcCmdline: yelp
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
SegvAnalysis:
 Segfault happened at: 0x7f1ba35f27e0 <WebCore::Document::view() const>: mov 0x130(%rdi),%rdx
 PC (0x7f1ba35f27e0) ok
 source "0x130(%rdi)" (0x00000130) not located in a known VMA region (needed readable region)!
 destination "%rdx" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: yelp
StacktraceTop:
 WebCore::Document::view (this=0x0) at ../Source/WebCore/dom/Document.cpp:1400
 getPangoLayoutForAtk (textObject=0x1ce9d40) at ../Source/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.cpp:1178
 webkit_accessible_text_get_text_at_offset (text=0x1ce9d40, offset=0, boundaryType=ATK_TEXT_BOUNDARY_LINE_START, startOffset=0x7fffba5101ac, endOffset=0x7fffba5101a8) at ../Source/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.cpp:1202
 atk_text_get_text_at_offset (text=0x1ce9d40, offset=0, boundary_type=ATK_TEXT_BOUNDARY_LINE_START, start_offset=<value optimized out>, end_offset=0x7fffba5101a8) at atktext.c:454
 ?? () from /usr/lib/libspi.so.0
Title: yelp crashed with SIGSEGV in WebCore::Document::view()
UpgradeStatus: Upgraded to natty on 2011-06-19 (10 days ago)
UserGroups: adm admin cdrom dialout dip fax floppy fuse plugdev tape video
XsessionErrors:
 (firefox-bin:1831): Bonobo-WARNING **: Bonobo must be initialized before use
 (thunderbird-bin:2018): Bonobo-WARNING **: Bonobo must be initialized before use
 (firefox-bin:2051): Bonobo-WARNING **: Bonobo must be initialized before use
 (firefox-bin:3537): Bonobo-WARNING **: Bonobo must be initialized before use

[Alan Jenkins (aj504)]

Or maybe not :-(. I think my backtrace actually has slightly more information than this one. (I built yelp debugging symbols from source).

Anyway, this really isn't hard to reproduce. So if you know how to make a better backtrace, you should be able to do it yourself.

Just

1) uninstall gnome-user-guide,
2) enable system->preferences->assistive technology,
3) then enable Orca under system->preferences->assistive technology->preferred applications->accessibility->visual,
4) log out & back in again,
5) start "yelp", go view->all, click "orca", click "universal access help". (If it doesn't crash straight away, then click "back", and then click "universal access help" again.

[Apport retracing service (apport)]

StacktraceTop:
 WebCore::Document::view (this=0x0) at ../Source/WebCore/dom/Document.cpp:1400
 getPangoLayoutForAtk (textObject=0x1ce9d40) at ../Source/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.cpp:1178
 webkit_accessible_text_get_text_at_offset (text=0x1ce9d40, offset=0, boundaryType=ATK_TEXT_BOUNDARY_LINE_START, startOffset=0x7fffba5101ac, endOffset=0x7fffba5101a8) at ../Source/WebCore/accessibility/gtk/AccessibilityObjectWrapperAtk.cpp:1202
 atk_text_get_text_at_offset (text=0x1ce9d40, offset=0, boundary_type=ATK_TEXT_BOUNDARY_LINE_START, start_offset=<optimized out>, end_offset=0x7fffba5101a8) at atktext.c:454
 impl_getTextAtOffset (servant=<optimized out>, offset=0, type=Accessibility_TEXT_BOUNDARY_LINE_START, startOffset=0x7fffba510210, endOffset=0x7fffba5101f0, ev=<optimized out>) at text.c:128

[Alan Jenkins (aj504)]

In 11.10, the window seemed to hang instead of crashing... it eventually closed, then an error message told me (without being prompted) that I didn't have enough free memory to submit a crash report.

[dino99 (9d9)]

This version has expired long time ago, and is no more supported